org.apache.nutch.searcher
Class IndexSearcher

java.lang.Object
  org.apache.nutch.searcher.IndexSearcher

All Implemented Interfaces:

Closeable, HitDetailer, Searcher

public class IndexSearcher
extends Object
implements Searcher, HitDetailer

Implements Searcher and HitDetailer for either a single merged index, or a set of indexes.

Constructor Summary

IndexSearcher(Path[] indexDirs, Configuration conf)
Construct given a number of indexes.

IndexSearcher(Path index, Configuration conf)
Construct given a single merged index.

Method Summary

void	close()
HitDetails	getDetails(Hit hit) Returns the details for a hit document.
HitDetails[]	getDetails(Hit[] hits) Returns the details for a set of hits.
String	getExplanation(Query query, Hit hit) Return an HTML-formatted explanation of how a query scored.
Hits	search(Query query) Return the top-scoring hits for a query.
Hits	search(Query query, int numHits, String dedupField, String sortField, boolean reverse) Deprecated.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IndexSearcher

public IndexSearcher(Path[] indexDirs,
                     Configuration conf)
              throws IOException

Construct given a number of indexes.

Throws:

IOException

IndexSearcher

public IndexSearcher(Path index,
                     Configuration conf)
              throws IOException

Construct given a single merged index.

Throws:

IOException

Method Detail

search

@Deprecated
public Hits search(Query query,
                              int numHits,
                              String dedupField,
                              String sortField,
                              boolean reverse)
            throws IOException

Deprecated.

Description copied from interface: Searcher

Return the top-scoring hits for a query.

Specified by:

search in interface Searcher

Throws:

IOException

search

public Hits search(Query query)
            throws IOException

Description copied from interface: Searcher

Return the top-scoring hits for a query.

Specified by:

search in interface Searcher

Throws:

IOException

getExplanation

public String getExplanation(Query query,
                             Hit hit)
                      throws IOException

Description copied from interface: Searcher

Return an HTML-formatted explanation of how a query scored.

Specified by:

getExplanation in interface Searcher

Throws:

IOException

getDetails

public HitDetails getDetails(Hit hit)
                      throws IOException

Description copied from interface: HitDetailer

Returns the details for a hit document.

Specified by:

getDetails in interface HitDetailer

Throws:

IOException

getDetails

public HitDetails[] getDetails(Hit[] hits)
                        throws IOException

Description copied from interface: HitDetailer

Returns the details for a set of hits. Hook for parallel IPC calls.

Specified by:

getDetails in interface HitDetailer

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Throws:

IOException